From 61002f7db33c7d064cddcdab680fb750fa43d8fd Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@infradead.org>
Date: Wed, 18 Aug 2010 05:29:18 -0400
Subject: [PATCH] ext4: do not send discards as barriers

ext4 already uses synchronous discards, no need to add I/O barriers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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